Hi there,
Hope you are doing well and thanks for reaching out.
Is this an issue with a particular PDF file or with all the PDFs? Please try with a different PDF file and check. Also try updating the Reader Mobile app from the App Store and reboot the device once and see if that helps.
You may also try few troubleshooting steps and see if that works:
1. Ensure that you have a stable internet connection, as document conversion requires an active connection to Adobe servers.
2. Sign Out and Sign Back In: Sometimes, signing out of your Adobe account and signing back in can help reset stuck processes.
3. Clear App Cache (if applicable): On iPadOS, clearing the app cache isn't straightforward, but you can try offloading the app via Settings > General > iPad Storage > Adobe Acrobat > Offload App, then reinstalling it. This won’t delete your documents https://helpx.adobe.com/acrobat/mobile-app-faq.html
Hope this information will help